Connect public, paid and private patent data with Google Patents Public Datasets

Improvement in safety-valves

Download PDF

Info

Publication number
US163618A
US163618A US163618DA US163618A US 163618 A US163618 A US 163618A US 163618D A US163618D A US 163618DA US 163618 A US163618 A US 163618A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
valve
pipe
mercury
disk
receiver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/08Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/09Safety devices including the pressure indicators
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S137/00Fluid handling
    • Y10S137/906Valves biased by fluid "springs"
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7904Reciprocating valves
    • Y10T137/7908Weight biased
    • Y10T137/7921Weight coaxial with valve

Description

Ulvrrnn STATES PATENT OFFICE.

THOMAS WVALKER, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN SAFETY-VALVES.

SJBOlfiCfttiOD forming part of Letters Patent No. 163,618, dated May 25,1875; application filed February 9, 1875.

To allavhom it may concern:

Be it known that I, THOMAS WALKER, of Philadelphia, Pennsylvania, have invented an Improvement in Safety-Valves, of which the following is a specification:

My invention relates to the mode of apply ing weight or resistance, by the use of mercury, water, or other similar bodies, to safetyvalves for steam-boilers or other apparatus which require the pressure to be relieved at any given point.

Figure 1 is a side elevation of the valve embodying my invention. Fig. 2 is a vertical section, showing the arrangement of the several parts.

a is an ordinary valve, constructed so as to prevent the escape of steam from the boiler until the pressure has attained the required force. I) is the lower half of chamber, securely fastened to the body of the valve a by a perforated pipe, as shown in the drawings. This can also be accomplished by the use of pillars or studs, or equivalent devices, for the purpose of allowing the free escape of the steam, thus preventing its accumulating, and causing a pressure against the disk 0 on its lower side. 0 is a disk made of rubber or other flexible material, for the purpose of allowing motion to the valve. (1 is a bolster or piston passing through the lower half of chambet I). The lower point rests upon the valve, and the upper end against the disk 0. e is the upper half of chamber, which is secured to the lower half by screws or bolts, holding in position the disk 0. f is a hollow column or pipe, which connects the chamber with the receiver g. g'is a receiver secured to the column or pipef, and constructed so as to receive the mercury forced up the pipe f. h is a cover for the receiver 9. i is a cock for the purpose of drawing off the mercury at any time.

The principle on which my valve works is known as the dead-weight principle. The column f and upper part of chamber 0 is filled with mercury or other fluid, which creates a pressure on the disk 0, bolster or piston d, and valve, in the same ratio that the chamber 6 is to the colummf, so that when the pressure increases on the valve the mercury is forced up through the pipe f, and into the receiver 9, thus allowing the steam to escape until the pressure is decreased, when the mercury flows instantly down the pipe and closes the valve. The receiver is so proportioned. that if more mercury is applied the lifting of the valve will cause it to overflow, thus securing a safety-valve with a minimum amount of friction, which cannot be overloaded atter once being placed in position.

I make no claim to the valve-body or valve, for I am aware they are not new; but

I do claim as my invention The combination of the chamber 1) e, perforated pipe-disk c, bolster or piston d, hollow column or pipe f, receiver 9, cover h, and cock '5 with the valve a, substantially as and for the purpose set forth in the annexed specification.

THOMAS \VALKER.

Witnesses:

J osnrn HEGINBOTHOM, GEORGE Sco'r'r.

US163618A Improvement in safety-valves Expired - Lifetime US163618A (en)

Publications (1)

Publication Number Publication Date
US163618A true US163618A (en) 1875-05-25

Family

ID=2233027

Family Applications (1)

Application Number Title Priority Date Filing Date
US163618A Expired - Lifetime US163618A (en) Improvement in safety-valves

Country Status (1)

Country Link
US (1) US163618A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629399A (en) * 1946-10-16 1953-02-24 Kulick George Safety valve for regulating and testing light pressures
US2916147A (en) * 1958-10-06 1959-12-08 Milton Sevack Ball guide and screen for deep well jet pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629399A (en) * 1946-10-16 1953-02-24 Kulick George Safety valve for regulating and testing light pressures
US2916147A (en) * 1958-10-06 1959-12-08 Milton Sevack Ball guide and screen for deep well jet pump

Similar Documents

Publication Publication Date Title
US1255395A (en) Liquid-separator and the like.
US208986A (en) Improvement in valves
US729145A (en) Beer-keg tap.
US776106A (en) Apparatus for raising fluids by solar heat.
US269886A (en) semple
US455913A (en) Means for equalizing the pressure of gas in gas service-pipes
US619705A (en) Valve
US3141474A (en) Safety valve construction
US258432A (en) David s
US1941023A (en) Combination relief valve
US618903A (en) Pressure-relief valve
US1171610A (en) Automatic valve.
US868030A (en) Valve.
US646902A (en) Device for preventing reregistration of gas by meters.
US185210A (en) Improvement in sink and basin trap
US957012A (en) Valve.
US548458A (en) Means for automatically separating liquids from natural gas
US787909A (en) Boiler.
US654484A (en) Check-valve.
US347213A (en) Safety-valve
US381150A (en) Separator
US251726A (en) Water-pressure regulator
US2074701A (en) Ball check valve
US1205898A (en) Valve.
US1005044A (en) Automatically-operated valve.